Effect of Integrated Weed Management Practices on Weed Indices, Yield and Economics of Ajwain (Trachyspermum ammi sprauge)

N.Nalini; A. Srinivas; T.Ram Prakash

Volume : IV, Issue : X, October - 2015

Effect of Integrated Weed Management Practices on Weed Indices, Yield and Economics of Ajwain (Trachyspermum ammi sprauge)

N. Nalini, A. Srinivas, T. Ram Prakash

Abstract :

A field experiment was conducted during rabi season of 2012–13 at the college farm of ANGRAU, Rajendranagar, Hyderabad to find out most suitable and economical method of weed control in Ajwain((Trachyspermum ammi sprauge). The experiment was laid in RBD. Based on study, it was revealed that besides Hand weeding at 20, 40 and 60 DAS treatment, significantly highest plant height at all the growth stages, number of anches/plant, yield attributes like number of umbels/plant, number of seeds/ umbellate, seed and straw yields of ajwain were recorded with oxyfluorfen @ 0.12 kg a.i ha–1 as PE fb quizalfop –p–ethyl @ 0.05 kg a.i ha–1 as PoE at 20 DAS and closely followed by oxyfluorfen @ 0.12 kg a.i ha–1 as PE fb hand weeding at 40 DAS. Similarly, besides hand weeding 20, 40 and 60 DAS treatment, the lowest dry weight of weed at harvest and weed index as well as highest weed control efficiency was also obtained with oxyfluorfen @ 0.12 kg a.i ha–1 as PE fb quizalfop –p–ethyl @ 0.05 kg a.i ha–1 as PoE at 20 DAS. The highest gross returns (Rs. 1,1,500 ha–1) were obtained when the crop was given hand weeding at 20, 40 and 60 DAS, but the highest benefit: cost ratio of 2.7 was realized due to application of oxyfluorfen @ 0.12 kg a.i ha–1 as PE fb quizalfop –p–ethyl @ 0.05 kg a.i ha–1 as PoE at 20 DAS.